Moving-picture machine.



J. B. JOHNSON.

MOVING PIGTURE MACHINE.

APPLICATION FILED JAR. 29, 1909.

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W/TNEsSe's: v INVENTOR Patented May 28, 1912.

-QMY WOZMLAM ATTORNEDQ J. B. JOHNSON. MOVING PICTURE MACHINE.

APPLICATION FILED JAN. 29. 1909.

Patented May 28, 1912.

4 SHEETS-SHEET 2.

J. B. JOHNSON.

MOVING PICTURE MACHINE.

' APPLICATION FILED JAN. 29, 1909.

Paterited May 28, 1912. I

4 SHEETS-SHEET 3.

lNVEf/TOR WITNESSES.-

J. B. JOHNSON. MOVING PICTURE MACHINE.

Patented May 28, 1912.

APPLICATION FILED JAN. 29, 1909.

4 SHEETQ-SHEET 4.

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V I ATTWEM part sufiiciently from a straight line to in- UNITED STATESPATENT OFFICE.

. JESSE nconnsoiv, or PHILADELBHIA, rnunsrnvauia, assrenoa T0 sxnemunnLUBIN, or PHILADELPHIA, PENNSYLVANIA.

Specification of Letters Iatent.

Application filed January 29, 1809. Serial No. 474,949.

invented certain Improvements in Moving- Picture Machines, of which thefollowing is a specification.

My invention is a moving picture machine comprising improvements havingthe characteristics disclosed in the following description and theaccompanying drawings. in

v illustration thereof.

In the drawings, Figure 1 is a sectional side elevation of a machineembodying my improvements; Fig. 2 is a sectional rear elevation thereof;Fig. 3 is a sectional eleva:

tion of the side opposite that shown in Fig.

ii, the door being open; 4 is a sectiOnal view taken on the line 44 ofFig. 2; Fig. 5 is a view of the base ooacting with the cone shown in F i4; Fig. 6.is a view of the base for carrying a modified cone withfeatures used in a modified form of the machine, and Fig. -7 is an axialsectional view of the modified cone with its connections.

The machine, as illustrated in Figs 1 to 5 inclusive, has thebase 1 withthe frame 2 fixed thereon. A carriage3, having the rack 4, ismovable'vertically on guides 5' fixed to the frame. A gear 6 engages therack and is fixed on a shaft 7, the shaft being journaled in the framebrackets 8 and turned by a handle 9 fixed thereon to effect the movementofthe carriage.

The driving shaft 10, 'journaled in the frame 2 and revolved by thehandle 11, has fixed thereon the driving gear 12 which revolves thepinion 13, the latter bein fixed on a shaft 14 journaled in the carnage3.

A gear wheel 15, fixed on the shaft 14, re-

volves a pinion 16 fixed on a shaft 17 which is journaled in thecarriage 3. As the vertical movement of the carriage is not great and asthe movement carries the small gear 13 tangentially to the large gear12, they remain in mesh. The arc of the gear 12, subtended between itshighest and lowest points engaged by the gear 13, does not deterferewith the desired operation. The

shaft 17 has thereon the fly 'wheels 18 for gear 20 which revolves I theshutter 21 through the shaft 22 journaled in the carriage, and theGeneva element 23 which glves step by step movement to the complementaryelement 24 on the shaft 25, the latter, being journaled in the carriage3 and giving an intermittent movement to the in.- termediate feedingsprockets 26 fixed thereon. The shaft 10 has fixed. thereon the seconddriving gear 27 which (through the em gaging idler gears 28, 29 and 30journaled by, the spindles 31, 32 and 33) revolves the pinion 34 fixedto the shaft 35, the latter being journaledin the frame 2 and havingfixed thereon the upper film feeding sprockets 36. The driving gear 27also acts, through the engaging idler gears 37 and 38 journaled by thespindles 39 and 40, on the pinion 41 fixed to the shaft 42, the latterbeing journaled in the frame and carrying the lower film feedingsprockets 43.

The intermediate sprockets 26 have coacting therewith the film guidingrollers 44 revoluble on a journal 45 which is carried by, a crank arm46, the arm being carried Patented May 28,1912.

by a journal 47 revoluble in the carriage-3.

in the carriage isa coiled spring 50, the

journal being movable longitudinally and having a pin 51 which engages anotch 52 in the-bearings Hence when the pin-lies in the notch therollers are held up to the sprockets, but when it is desired to adjustthe film held to the sprockets by the rollers the latter may bewithdrawn by drawing back the arm and disengaging the pin from thenotch, the rollers being heldin either position by the spring.

The frame has connected thereto,.by the hinges .53, the door 54, whichcarries the shield 55 for supplementing the doors action of protectlngthe film, particularly against fire, and connected to the base by ahinge 56 is a further shield 57 which is caused, by the spring 58, tobear a ainst the bottom of the door when the lat er is closed, thehinges permitting this shield to be drawn back when it is desired toopen the door. j

A guiding roller 59 is journaled in-bearings 60 carried by the door andwhen the latter is held closed by the latch 61 this roller coacts withthe way 62 fixed to the frame for guiding the film.

10 dinally movable in the frame in contact with the periphery of thecam, and a cone 69 movable axially on the shaft 7 with its surface incontact with the pin. The shaft 70 is journaled at one end in the frame2 I6 and at the other end in a cap 71 which is detachably connected tothe frame. Fixed to the shaft within the cap is a base 72, having. theform ofla disk, containing the similarly disposed races 7 3. The cone 69has I6 the peripheral flange 74 movable over the periphery of the ,base72 and the concavoconical interior surface 75, balls 7 6 being engagedbetween the races of the base and the mterio'rsurface of the cone; Acoiled spring 38 77 ,supported by a collar 78 on the shaft 70, bearsagainst the top of the .cone and causes the interior conical surfacethereof to act tomove the balls '7 6 towardthe" shaft. A ion' 7 9 isfixed on the shaft 7 O and, through 80 its engagement with a gear 80fixed to the idler 29, revolves the shaft, whereupon the balls moveoutward from the axis of revolution, the cone is moved along the shaftthereby, the pin 68 is moved outward by the cone,

I 88 the cam 67 is revolved by the pin, and the screen 64 is raised touncover the aperture 63. As the speed ofrevolution decreases the springmoves the cone back and the weight of the screen causes it to drop, thecam it simultaneously effecting the retract-ion of the pin.

In the. modified construction shown in Figs. 6 and 7 the cone 81 issubstituted for the cone 69, the base 82 is substituted for 1 the base 72, and the wings 83 are substituted for the balls? 6, the wings havingthe eccentrio pivotal connections 84 with the base 82.

. Sp'rin s 85, connected to the base near the shaft %0 by pins 86, bearagainst the points 87 of the wings to bring the latter together in therelation shown in Fig. 6 and the coiled spring 7 7 acts on the cone 83to bring it to the pos tion shown in Fig. 7 the conical interior surfaceof the cone fitting the coni- L 85 cal exterior surfaces of the wings.When the shaft is revolved, the wings swing outwardly and cause the cone81 to move along the shaft 70 to lift the screen through the mechanismdescribed in connection with '30- the cone 69. As the speed of therevolving shaft decreases, the wings move inwardly, the spring 77retracts-the cone and the screen is ermitted-to fall.

t will be understood from the foregoing 85 description that the carriagecan be readily adjusted to adjust the'position of the film sectionexposed in the optical axis of the machine, together with theintermittently operating film. feeding mechanism and light interruptingshutter; that the film guiding devices are readily operated toaccurately control the movement of the film while being readilyseparable to permit its insertion and withdrawal; that the shutteroperating gears have theadvantages of permitting the shutter to liecloser than is usual to the parallel shaft for driving it, while thehelical character of the gear teeth provide a rolling contact whichavoids the rattling of usual gears; that the screen operating mechanism15 simple, eihcient and practically unexposed, and that the film iseffectively screened or shielded by convenient devices.

Having described my invention, I claim:

1. In a motion picture machine, a member having an aperture therein, ascreen movable to open and close said aperture, a revoluble shaft, acone movable'longitudinally on said shaft, means operated by the revolution of said shaft to move said cone longitudinally, and means wherebysaid cone moves said screen to open said aperture.

2. In a motion picture machine, a door having an aperture therein,mechanism for feeding a filmacross said aperture, a shaft connected andrevoluble with said film feeding mechanism, a cone longitudinally mov-.

able on said shaft, means whereby the revolution of said shaft movessaid cone, a recipro'cating pin movable by said cone, a screen and meanswhereby said pin moves said screen to open said aperture.

3. In a motion picture machine, a door having an aperture therein, ascreen carried by said door and movable across said aperture, arevoluble shaft, on said shaft a member having an inclined surface,means whereby the revolution of said shaftmoves said member, and meanswhereby said inclined surface moves said screen on the movement of saidmember. p

4. In a motion picture machine, a movablescreen, a revoluble shaft, adevice having an inclined surface movable longitudinally on said shaft,2. base fixed to said shaft, a means between said device and base, saidmeans moving outwardly on the revolution of said shaft to move saiddevice, and means whereby said device moves said screen. 5. In a motionpicture machine, a hinged door having an aperture therein, a screenjournaled on said door, a cam fixed to said screen, a reciprocating pinmaking contact with said cam,-a revoluble shaft, a device movablelongitudinallyv on said shaft, said device having an interior and anexterior surface inclined to said shaft, 11 base fixed to saidshaft,'and means supported by said base whereby said device is moved andmoves said pin on the revolution of said shaft.

(3. In a motion picture machine, a movable screen, means movable bycentrlfugal action from an. axis of revolution, a device along the axisof said means by said wing, and means operated by said device foroperating said screen.

-In Witness whereof I have hereunto set my name this 22nd day ofJanuary, A. ,D. 1909, in the presence of the subscribing wit- IIBSSCS.

JESSE B. JOHNSON.

Witnesses:

Joe. G. DENNY, Jr.,- 7 Roann'r JAMES EARLEY.

